所以，在程序开始遍历这些文件的时候，假设为了确定目录的总大小，就必须逐一重新查询文件系统。

So when the program starts to loop through the files, perhaps to determine the directories overall size, it has to requery the file system one by one.

youdao

所以，在程序开始遍历这些文件的时候，假设为了确定目录的总大小，就必须逐一重新查询文件系统。

So when the program starts to loop through the files, perhaps to determine the directories overall size, it has to requery the file system one by one.

youdao